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CN-122014302-A - Roof bolter and method for rock reinforcement

CN122014302ACN 122014302 ACN122014302 ACN 122014302ACN-122014302-A

Abstract

A roof bolter and method for rock reinforcement. The bolting rig (1) comprises a bolt storage portion (12), which bolt storage portion (12) is supported at the front of the carrier (2) and is movable to a pick-up position (PP). The bolting unit (4) comprises a bolting shelf (11) and is positioned to the pick-up position for simultaneous replenishment of a plurality of rock bolts (5) from a delivery plane (16) of the bolt storage.

Inventors

  • HAAVISTO ARI
  • Yarno Hekkala
  • Heidi Numikolu
  • Wheeler Parxining
  • Temu Hanikaning
  • Hannu Yako
  • TIMO SALMINEN

Assignees

  • 山特维克矿山工程机械有限公司

Dates

Publication Date
20260512
Application Date
20250917
Priority Date
20241111

Claims (13)

  1. 1. A rock bolting machine (1) for installing a rock bolt (5) into a borehole (6) to strengthen a rock surface, Wherein, the jumbolter (1) comprises: A movable carrier (2); The at least one anchor arm support (3) is arranged on the carrier (2) and faces the operation direction (OR); -at least one bolting unit (4), the at least one bolting unit (4) being mounted to a distal portion of the bolting boom (3) and configured for feeding the rock bolt (5) into the borehole (6); -a bolt shelf (11), the bolt shelf (11) being mounted to the bolting unit (4) and being capable of holding at least one rock bolt (5); -at least one anchor stock storage (12), the at least one anchor stock storage (12) for storing a plurality of rock anchors (5) and being supported to the carrier (2); -at least one pick-up position (PP) in which the rock bolt (5) is configured for being loaded from the bolt storage (12) to the bolt shelf (11) under the control of at least one Control Unit (CU); and wherein the pick-up position (PP) determines the position and orientation of the bolt storage (12); It is characterized in that the method comprises the steps of, -The anchor rod storage (12) supported to the carrier (2) is movably arranged in front of the carrier (2) and is movable to the pick-up position (PP), which is located in front of the carrier (2) in the operating direction (OR); the bolt shelf (11) comprises a plurality of parallel storage locations (34) for receiving a plurality of rock bolts (5); and wherein the Control Unit (CU) is configured to control the movement of the bolting boom (3) to position the bolting shelf (11) to the pick-up position (PP) in response to data about the position and orientation of the bolting reservoir (12).
  2. 2. The roof bolter of claim 1, wherein the drill rod is, The anchor stock (12) supported to the carrier (2) is movable at least in the lateral direction of the carrier (2), whereby the anchor stock (12) is movable to at least one Refill Position (RP) outside the pick-up position (PP), which Refill Position (RP) is located laterally outside the front of the carrier (2).
  3. 3. The roof bolter of claim 2, wherein, The anchor stock (12) is supported to an actuating arm (14), the actuating arm (14) being connected to the front of the carrier (2), and the actuating arm (14) being movable in the horizontal direction and in the vertical direction by means of at least one swivel joint (15 a-15 c) and at least one swivel mechanism.
  4. 4. The roof bolting rig according to any of the foregoing claims 1-3, characterized in that, The installation of the bolt storage (12) includes a quick coupling (24), whereby the bolt storage (12) is a replaceable unit.
  5. 5. The bolting rig according to any of the foregoing claims from 1 to 4, characterised in that the bolt storage (12) further comprises: -a support element (31), the support element (31) being adapted to support the rock bolt (5) in a plurality of adjacent rows (33), wherein each row (33) comprises a plurality of rock bolts (5) arranged in sequence; -a delivery plane (16), the delivery plane (16) being located on that side of the bolt storage (12) which is transverse to the longitudinal direction of the rock bolt (5); And at least one feed arrangement (37), the at least one feed arrangement (37) being for moving the rock bolts (5) within the bolt storage (12) towards the delivery plane (16) so that the delivery plane (16) has a plurality of parallel rock bolts (5) accessible by the bolt shelf (11).
  6. 6. The roof bolter of claim 5, wherein the drill rod is, The support element (31) comprises vertically oriented grooves (32) configured for receiving a plurality of lateral rock bolts (5) one above the other, and The delivery plane (16) is located on a vertically upper surface of the bolt storage portion (12).
  7. 7. The roof bolter of claim 5, wherein the drill rod is, The support elements (31) are horizontally directed parallel carriers provided with support surfaces on the vertical upper surfaces thereof, whereby each of the support elements (31) is configured for supporting a plurality of laterally adjacent and horizontally directed rock bolts (5); And the delivery plane (16) is located at a vertical side of the bolt reservoir (12) on a side of the distal end of the bracket.
  8. 8. The roof bolting rig according to any of the foregoing claims 1-7, characterized in that, The Control Unit (CU) is configured to determine the pick-up position (PP) in response to provided data about a planned work cycle of rock bolting measures to be performed at a work site.
  9. 9. The roof bolting rig according to any of the foregoing claims 1-8, characterized in that, The bolt storage (12) includes a gripping mechanism (40), the gripping mechanism (40) being for gripping at least one preloaded bolt assembly (20) and for retaining the bolt assembly (20) in the bolt storage (12).
  10. 10. A method for rock reinforcement, wherein the method comprises: Using a bolting rig (1) comprising a carrier (2), a bolting boom (3), a bolting unit (4) and a bolting reservoir (12) supported to the carrier (2); Drilling a borehole (6) into a rock surface by means of a rock drilling machine (7); Feeding grouting material into the borehole (6), and -Feeding a rock bolt (5) to the borehole (6) by means of a bolt head (8) of the bolt-driving unit (4); It is characterized in that the method comprises the steps of, Providing the bolting unit (4) with a bolt shelf (11) for intermediately storing a plurality of rock bolts (5) to the bolting unit (4); -moving the anchor stock storage (12) to a desired pick-up position (PP) at the operating area of the bolting boom (3) and in front of the carrier (2); actuating the bolting boom (3) to move the bolting shelf (11) to the pick-up position (PP) for replenishing the bolting shelf (11) with a plurality of rock bolts (5); Positioning the bolt shelf (11) and the bolt storage (12) relative to each other at the pick-up position (PP) to match a plurality of storage locations (34) of the bolt shelf (11) with a plurality of rock bolts (5) accessible on the bolt storage (12), and By means of the anchor bar shelf (11), a plurality of rock anchor bars (5) are clamped simultaneously.
  11. 11. The method of claim 10, comprising, -Simultaneously distributing a plurality of parallel rock bolts (5) to a delivery plane (16) of the bolt storage (12) by means of at least one feed arrangement (24) of the bolt storage (12).
  12. 12. The method according to claim 10 or 11, comprising, -Moving the bolt storage (12) in front of the carrier by means of a manipulator arm (14) to position the bolt storage (12) to a plurality of pick-up positions (PP) and at least one Replenishment Position (RP) where rock bolts (5) are loaded into the bolt storage (12).
  13. 13. The method according to any of the preceding claims 10 to 12, characterized by comprising, The stock storage (12) is replenished by simultaneously loading a plurality of rock bolts (5) into the stock storage (12) in a manner providing a clamp or bundle of bolts.

Description

Roof bolter and method for rock reinforcement Technical Field The present invention relates to a rock bolting rig for installing a rock bolt into a borehole to strengthen a rock surface. The invention also relates to a method for rock reinforcement. The field of the invention is more particularly defined in the preamble of the independent claim. Background In mines, construction sites, and at other working areas, there is a need to strengthen rock surfaces and thereby ensure their safety and suitability for the intended use. One common method for rock reinforcement is rock bolting (rock bolting). In such reinforcement systems, a plurality of rock bolts are secured in a borehole by a grouting material. In this way, the strata are bonded together, thereby reducing the risk of collapse. There are a number of different rock bolt types, bolting drills and methods for installing rock bolts. However, current solutions for handling rock bolts at work sites have shown to have some drawbacks. Disclosure of Invention It is an object of the present invention to provide a new and improved solution for handling and installing rock bolts to strengthen rock surfaces. The bolting rig according to the invention is characterized by the characterizing part of the independent device claim. The method according to the invention is characterized by the characterizing part of the independent method claim. The idea of the solution disclosed is that the rock bolt storage is supported to the carrier of the rock bolt drilling machine and can be moved in front of the carrier. The anchor stock storage can be moved to a desired pick-up position in front of the carrier in the operating direction. The rock bolt shelf is mounted to the rock bolt driving unit and includes a plurality of parallel storage locations for receiving a plurality of rock bolts. The control unit may control movement of the bolting boom in response to data regarding the position and orientation of the bolting reservoir to position the bolting shelf to said pick-up position. In other words, the bolting reservoir is part of the bolting rig and can be moved to a desired pick-up position at the front area of the carrier. Furthermore, the bolting rack of the bolting unit is moved to the picking position in order to collect new rock bolts from the bolting stock positioned to the picking position. Accordingly, in order to replenish the rock bolt shelf, both the rock bolt storage and the rock bolt shelf are moved to a pick-up position under the control of the control unit and matched at the pick-up position to perform the pick-up of the rock bolt. One advantage of the disclosed solution is that the anchor stock is located remotely from the carrier, so that the layout of the carrier can be designed more freely. In other words, the anchor stock storage does not occupy space on the carrier. Another advantage is that, since there is no fixed physical pick-up position, the pick-up position can be selected or defined in accordance with the operating efficiency, the available space in the operating direction, collision avoidance, the kinematic properties of the bolting boom and possibly other problems. Since there is no fixed or predetermined pick-up position, any suitable position may be used as pick-up position. This solution thus increases the operational flexibility. The pick-up location may be dynamically selected during operation. In addition, the lateral stability, in particular the steering stability, of the roof bolter can be increased. The anchor stock may be moved to its outermost point (outmostplacement) within the turning radius to balance the potential for lateral tipping. The control unit controls the operation of the rock bolting rig and its actuators, the control unit being provided with sensing data regarding the movements of the bolting boom, the bolting unit and the bolting reservoir, and the control unit being able to generate position data required to move the bolting reservoir to any desired position in front of the carrier, being able to define position data for a selected pick-up position, and being able to move the bolting shelf to a determined pick-up position. According to one embodiment, the rock bolt shelf is configured to simultaneously pick up a plurality of rock bolts from the rock bolt storage. Thereby, all storage locations of the rock bolt shelf are simultaneously replenished by performing a single pick-up operation. In this way, the filling of the anchor bar shelf is quick and efficient. According to one embodiment, the number of storage locations in the anchor bar shelf is 2-6, preferably 4. The anchor bar shelf may be regarded as an intermediate anchor bar storage between the actual anchor bar storage and the anchor bar feeding device of the bolting unit. According to one embodiment, the rock bolt shelf is a static part immovably mounted to the bolting unit and does not have any handling means for moving the rock bolt from the rock bolt storage